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公开(公告)号：US5788817A
公开(公告)日：1998-08-04
申请号：US878725
申请日：1997-06-19
CPC分类号： D21G1/006 , D21F3/0218 , D21F3/04 , D21F3/045
摘要： The invention relates to a roll press including at least three rolls forming several press nips for the treatment of a web of material. One press roll comprises a very flexible roll shell which is rotatable around a fixed support and is mounted on the support by at least one support element which has a concave support surface for defining a wide press nip with a cylindrical backing roll. The backing roll forms an additional press nip with at least one not sag-controlled roll. To obtain as uniform as possible a press nip between the backing roll and at least one additional roll which is without sag control, the circumference of the roll shell of the backing roll decreases axially towards its ends, i.e., that roll may be crowned. In addition, the backing roll may have its own roll shell support elements which are either in the press plane or are inclined slightly out of the press plane and/or the hydraulic pressure fluid supplied to the press roll and to the backing roll is adapted to supply a greater pressing force by the press roll. Optionally, a fourth press roll may form a nip with the additional roll. A felt passes through each nip.
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公开(公告)号：US5711854A
公开(公告)日：1998-01-27
申请号：US657803
申请日：1996-05-31
CPC分类号： D21F3/0218
摘要： A roll press including at least two rolls forming a press nip for the treatment of a web of material. A press roll includes a very flexible roll shell which is rotatable around a stationary support. The roll shell is mounted by at least one support element on the support. The support element has a concave support surface which forms a wide press nip with the backing roll. This provides a roll press which, even in the case of a backing roll which is without sag control, defines a press nip which is very substantially uniform. This is achieved by having the outer circumference of the shell of the press roll change in dimension in the axial direction from the axial center of the roll towards the ends of the roll, i.e., the outer circumference may increase or decrease. The circumference of the backing roll may or may not correspondingly change in the axial direction.
摘要翻译： 一种辊压机，包括形成压区的至少两个辊，用于处理材料网。 压辊包括可绕固定支撑件旋转的非常柔性的卷壳。 辊壳由支撑件上的至少一个支撑元件安装。 支撑元件具有凹形支撑表面，其与背衬辊形成宽的压力压区。 这提供了一种辊压机，其即使在没有下垂控制的背衬辊的情况下，限定了非常基本均匀的压榨辊隙。 这是通过使压辊的壳体的外周在轴向方向上从辊的轴向中心朝向辊的端部改变的尺寸来实现的，即外圆周可以增加或减小。 背衬辊的圆周可以或可以不在轴向上相应地改变。
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公开(公告)号：US5908537A
公开(公告)日：1999-06-01
申请号：US658853
申请日：1996-05-31
CPC分类号： D21G1/006 , D21F3/0218 , D21F3/04 , D21F3/045
摘要： The invention relates to a roll press including at least three rolls forming several press nips for the treatment of a web of material. One press roll comprises a very flexible roll shell which is rotatable around a fixed support and is mounted on the support by at least one support element which has a concave support surface for defining a wide press nip with a cylindrical backing roll. The backing roll forms an additional press nip with at least one not sag-controlled roll. To obtain as uniform as possible a press nip between the backing roll and at least one additional roll which is without sag control, the circumference of the roll shell of the backing roll decreases axially towards its ends, i.e., that roll may be crowned. In addition, the backing roll may have its own roll shell support elements which are either in the press plane or are inclined slightly out of the press plane and/or the hydraulic pressure fluid supplied to the press roll and to the backing roll is adapted to supply a greater pressing force by the press roll. Optionally, a fourth press roll may form a nip with the additional roll. A felt passes through each nip.
摘要翻译： 本发明涉及一种辊压机，其包括至少三个辊，其形成几个压力辊，用于处理材料网。 一个压辊包括非常柔性的辊壳，其能够围绕固定支撑件旋转并且通过至少一个支撑元件安装在支撑件上，所述至少一个支撑元件具有凹形支撑表面，用于利用圆柱形背衬辊限定宽的压力压区。 背衬辊与至少一个不下垂控制的辊形成另外的压榨压区。 为了获得尽可能均匀的背衬辊和至少一个没有松弛控制的附加辊之间的压榨压区，背衬辊的辊壳的圆周朝向其端部轴向降低，即该辊可以是凸面的。 此外，背衬辊可以具有其自身的辊壳支撑元件，它们处于压制平面中或者略微偏离压平面，和/或供应到压辊和背衬辊的液压流体适于 通过压辊提供更大的压力。 任选地，第四压辊可以与附加辊形成辊隙。 毛毡穿过每个辊隙。
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公开(公告)号：US06942761B1
公开(公告)日：2005-09-13
申请号：US09228658
申请日：1999-01-12
申请人： Hans Prinzing , Rainer Bentele
发明人： Hans Prinzing , Rainer Bentele
CPC分类号： D21F3/0218 , D21F3/045 , D21F3/06 , D21G1/022
摘要： Press device and method of using the same for treating a fibrous material web that includes a shoe press unit that includes a flexible press belt that revolves around a non-rotating carrier, a counter roll that includes a deflection compensation roll with a roll jacket revolving around a second non-rotating carrier, a third roll, a roll nip formed between the counter roll and the third roll, a press nip elongated in a web travel direction and formed between the shoe press unit and the counter roll, at least one first support element where the flexible press belt is supported on the non-rotating carrier by the at least one first support element in the region of the elongated press nip, at least one second support element where the roll jacket is supported on the second non-rotating carrier by the at least one second support element in the region of the elongated press nip. A changeable pressure differential occurs between internal pressures generated by the at least one first support element acting on the flexible press belt of the shoe press unit, and the at least one second support element acting on the roll jacket of the counter roll.
摘要翻译： 用于处理纤维材料网的压力装置和方法，该纤维材料纤维网包括靴形压榨单元，该单元包括围绕非旋转载体旋转的柔性压榨带，包括偏转补偿辊和辊套的辊 第二非转动载体，第三辊，形成在所述反向辊和所述第三辊之间的辊压区，沿着所述纸板行进方向延伸并且形成在所述靴形压榨单元和所述反向辊之间的压榨压区，至少一个第一支撑件 其中所述柔性压榨带在所述非旋转载体上由所述至少一个第一支撑元件在所述细长的压榨压区的区域中支撑，所述至少一个第二支撑元件将所述辊套支撑在所述第二非旋转载体上 通过在细长的压榨压区的区域中的至少一个第二支撑元件。 在由作用在靴形压榨单元的柔性压榨带上的至少一个第一支撑元件产生的内部压力和作用在反向辊的辊套上的至少一个第二支撑元件之间发生可变压差。
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